<div class="input-number">
  <span class="decrease" (click)="decrement()" [class.disabled]="isDisabled">-</span>
  <input  type="text" [ngModel]="value" (ngModelChange)="onModelChange($event)"
         [disabled]="isDisabled" [readonly]="isReadonly" [placeholder]="placeholder"
         (input)="onInput($event)">
  <span class="increase" (click)="increment()" [class.disabled]="isDisabled">+</span>
</div>
